package com.mva.Expense_DAO;

import java.util.ArrayList;

public interface ExpenseIO
  {
   // Expense reader methods
   boolean existsExpense (int sn, int seq);
   Expense getExpense    (int sn, int seq);
   boolean getExpenses   (ArrayList<Expense> expenses, int sn);

   // Expense writer methods
   boolean addExpense    (Expense e);
   boolean updateExpense (Expense e);
   boolean deleteExpense (Expense e);
  }
  
